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There might be some interference between the X-brace and the Progress front sway bar. I had this problem. Not a big deal, but you'd better have a file handy. you basically have to file down an outside corner of each sway bar bushing mount. These bushing mounts are very close to where the X mounts in the rear. this was my experience anyhow. I also had X-brace interference with my Tanabe. solved this by adding several washers between the X and the chasis to get that extra quarter inch clearance.

 
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^ Bump for my questions.

 
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yes,

yes,

yes,

if you get sway and strut bars and x-brace all around you will get a more nutrual car

don't forget the dampers

and you will have a hell of alot less body roll

 
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^ So if it increases understeer how would that help make it more neutral?

 
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Aaaaaaaa!!!! Stop the insanity!!


It time to stop some misconceptions.

Ok, Chassis reinforcements are important. And I say get as many as you can afford. But there are some things flying around here that have little to do with how they improve you're handling.

So it’s understood that chassis reinforcements strengthen the chassis of the car. So how does this improve handling? Well, an un-strengthened chassis is a flexible chassis, and any one who has taken Physics will under stand Newton's Third Law applies here. (Newton's Third Law states "For every action, there is an equal and opposite reaction.") So, every time the chassis flexes in one direction, the chassis will also want to flex in the opposite direction, Simply stated: an un-strengthened chassis is basically a Giant Un-dampened spring. This flexibly in turn compromises the rest of the suspension by not reacting to what the springs and shocks are telling it to do. You can spend all the time you want tuning the suspension, but if the chassis is flexible then the car will not be able to react properly to what the springs/anti-rollbars and dampeners are telling it to do. By strengthening the chassis, we allow the Springs/anit-rollbars and dampeners to do their jobs properly, and the car will handle better because of it. So, Chassis reinforcements Do Not directly influence whether or not a car's understeer or oversteer. They do however, allow the rest of the suspension do their jobs better and that affects understeer and oversteer.

 
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Thanks, Zzyzx, that's the answer I was looking for.

IronFist